DatabaseProcApplicationCreatedLinks
sybsystemprocssyb_aux_privnots  14 déc. 14Defects Propagation Dependencies

1     
2     /* Sccsid = "%Z% generic/sproc/src/%M% %I% %G%" */
3     
4     
5     create or replace procedure syb_aux_privnots
6         @left_binary varbinary(133), /* operand for the complement */
7         @col_count smallint, /* number of columns in the table */
8         @result_binary varbinary(133) output /* result of the complement */
9     as
10    
11        declare @loop_count tinyint /* loop counter for 133 bytes in varbinary */
12        declare @left_opr tinyint /* integer represenation of a byte in left operand */
13        declare @right_opr tinyint /* integer representation of a byte in right opr */
14        declare @result_opr tinyint /* result integer byte */
15        declare @expand_bin varbinary(133) /* expanded bit map with all 1s */
16        declare @temp_resbin varbinary(133) /* transient value store for the result */
17        declare @loop_bound tinyint /* stores the loop upper bound */
18    
19    
20        /*
21        ** initialize the loop_count
22        */
23    
24        select @loop_count = 1
25    
26        /* 
27        ** initialize loop_bound
28        */
29        select @loop_bound = @col_count / 8 + 1
30    
31        /* 
32        ** boundary condition. If left operand is 0, then the NOT of that is all 1s
33        */
34        if (@left_binary = 0x00)
35        begin
36            select @result_binary = 0x01
37            return
38        end
39    
40        /*
41        ** if left operand is all 1s, then NOT of of it is all 0s
42        */
43        if (@left_binary = 0x01)
44        begin
45            select @result_binary = 0x00
46            return
47        end
48    
49        /*
50        ** loop for each byte of 133 bytes varbinary operand
51        */
52        while (@loop_count <= @loop_bound)
53        begin
54            select @left_opr = convert(tinyint, substring(@left_binary, @loop_count, 1))
55    
56            select @result_opr =~ @left_opr /* complement the byte */
57    
58    
59            /*
60            ** first byte is treated differently as there is nothing to concatenate
61            */
62            if (@loop_count = 1)
63            begin
64                select @result_opr = @result_opr & 0xfe /* do this as bit 0 has a special
65                meaning. make it 0*/
66                select @temp_resbin = convert(binary(1), @result_opr)
67            end
68            else
69            begin
70                select @temp_resbin = @temp_resbin + convert(binary(1), @result_opr)
71            end
72    
73            select @loop_count = @loop_count + 1
74        end
75    
76    
77        /* need to zero out the unnecessary one's  */
78        exec sybsystemprocs.dbo.syb_aux_expandbitmap @col_count, @expand_bin output
79    
80        select @loop_count = 1
81    
82        /*
83        ** the temp_resbin has 1's beyond number of columns. We need to zero them out
84        */
85        while (@loop_count <= @loop_bound)
86        begin
87            select @left_opr = convert(tinyint, substring(@temp_resbin, @loop_count, 1))
88            select @right_opr = convert(tinyint, substring(@expand_bin, @loop_count, 1))
89            select @result_opr = @left_opr & @right_opr
90    
91            if (@loop_count = 1)
92            begin
93                select @result_binary = convert(binary(1), @result_opr)
94            end
95            else
96            begin
97                select @result_binary = @result_binary + convert(binary(1), @result_opr)
98            end
99    
100           select @loop_count = @loop_count + 1
101       end
102   

DEFECTS
 MBLI 3 Integer Value of Binary Literal is Platform Dependant 34
 MBLI 3 Integer Value of Binary Literal is Platform Dependant 36
 MBLI 3 Integer Value of Binary Literal is Platform Dependant 43
 MBLI 3 Integer Value of Binary Literal is Platform Dependant 45
 MBLI 3 Integer Value of Binary Literal is Platform Dependant 64
 MNER 3 No Error Check should check return value of exec 78
 MUCO 3 Useless Code Useless Brackets 34
 MUCO 3 Useless Code Useless Brackets 43
 MUCO 3 Useless Code Useless Brackets 52
 MUCO 3 Useless Code Useless Brackets 62
 MUCO 3 Useless Code Useless Brackets 85
 MUCO 3 Useless Code Useless Brackets 91
 MTR1 2 Metrics: Comments Ratio Comments: 34% 5
 MTR2 2 Metrics: Cyclomatic Complexity Cyclo: 6 = 7dec - 3exi + 2 5
 MTR3 2 Metrics: Query Complexity Complexity: 40 5

DEPENDENCIES
PROCS AND TABLES USED
calls proc sybsystemprocs..syb_aux_expandbitmap  

CALLERS
called by proc sybsystemprocs..sp_changegroup